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[dead serious] 

To be completely serious; not joking.
Suzie: Matthew likes you.
Sarah: Stop joking around, that's not funny.
Suzie: I'm dead serious.
[dead serious] by BellaW December 26, 2008

No Lie Dead Serious 

The ancient pact that unifies truth from brother to brother allowing the validity of a statement to be unquestioned.
PERSON 1 :"Dude, I just sharded all over myself!"

PERSON 2 : "No Lie Dead Serious?"

PERSON 1 : "Dude, No Lie Dead Serious!"

lrg dead serious hoody 

The most coveted hoody in history

First exposed to the public when Kanye West rocked the sample at a Stela McCartney fashion show the hype has just kept building.

Trust me this is the closest thing to crack the streetwear industry has ever produced, and leave it to LRG to once again break new ground.

The details are sick, a glow in the dark anatomically correct skeleton printed on the back and the front, covered by the rib cage is a broken heart with subtle repeat stenciling that says rotten, just like you to the core. But nothing tops the full zip hoody, with mesh eye holes so you can rock the full skull head and still not bump into walls. And check the gold fronts skeletor has nothing on this dude!
damn that lrg dead serious hoody a scary good lookin hoodie i'm dead serious

Dead Seriousness 

Stop being annoying I’m dead seriousness
Dead Seriousness by Yay Tay June 11, 2018

dead serous

Not to be confused with "dead serious", "dead serous" is a slang word/phrase which is commonly summoned by typos.
It means the same as "dead serious" but is found more fun, and used to humiliate the writer for a short period of time after.

Word/phrase derives from serous
"I’m dead serous, Tom."
dead serous by nortisverikool June 24, 2026
More from Urban Dictionary

square grouper

Nickname given to bales of marijuana thrown overboard or out of airplanes. Origin is reportedly from members of the US Coast Guard in the area of Southern Florida.
"Base we've got some square groupers floating outside of Miami harbor."
square grouper by slipsheet November 6, 2004
Word of the Day on October 7, 2026
A girl who does ballet and only talks about ballet. Her schedule is filled with dance classes which does not allow her to do any other activity.
"Hey, do you know that girl Sally?"

"Yeah, she's kind of annoying. All she ever talks about it ballet."

"Wow, what a Bunhead."

"Hey Sally, you want to hang out this weekend?"
"I can't, I have dance."
"You're such a Bunhead."

"Yeah... I know."
Bunhead by Jen00 October 24, 2014
Word of the Day on October 6, 2026

trucker's tan 

A sunburn or suntan focused on the left arm. It is caused by the left side of the body being the only half that gets exposed to sunlight while driving. Presumably, it would be located on the right side of the body in countries where they drive on the left side of the road.
I had a trucker's tan after driving for 10 straight hours on a sunny day.
Word of the Day on October 5, 2026
The phenomenon where adults salivate at children's toys
Every time I walk into the toy aisle, I catch myself kidulting over the latest action figures and LEGO sets!
kidulting by Emotional Cruiser October 12, 2025
Word of the Day on October 4, 2026
British slang for a scientist or technical expert, esp . when the speaker is not certain of the expert’s specific field of study. Not necessarily derogatory, but typically used by persons without a technical background. In the US, the equivalent would be “egghead”, “squint”, or “geek.”

Origin of the word is unknown. Started sometime in World War 2. Given the typical evolution of British slang, could easily have started because what these experts did was confusing or “baffling” to the common person.
According to the boffins downstairs, the murderer used a serrated blade.
Boffin by Agnon February 11, 2023
Word of the Day on October 3, 2026

Pee Calculus

When you have to pee in a movie but don’t want to miss anything, and must do the following mental equation: will the amount I have to pee cause enough discomfort to diminish my attention capacity for the remainder of the movie to an extent which is greater than the amount of the movie I would miss by making a mad dash to the restroom.
I saw Satantango last night, wonderful film but by the 5th hour I had to start doing pee calculus.
Pee Calculus by anorlondo October 1, 2026
Word of the Day on October 2, 2026
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